.part-404{
    position: relative;
    height: 600px;
    width: 800px;

    display: none;
}
.img-404{
    filter: blur(10px);

    position: absolute;
    top: 0;
    left: 0;

    z-index: 0;
}
#canvas{

    position: absolute;
    top: 0;
    left: 0;

    z-index: 1;
}
.btn-primary{
    position: absolute;
    top: 500px;
    left: 300px;

    z-index: 2;
}
/* .btn-success{
    position: absolute;
    top: 500px;
    right: 300px;

    z-index: 2;
} */